Once your SLI is okay, start a FurMark test in fullscreen and you should have something like this:Ģ.3.2 – The dirty way: the file renaming trick (part 1): renaming FurMark.exe in etqw.exe is a simple solution to make SLI working. And to be sure your SLI cards are working together, you can enable the SLI Visual Indicator: You have also to manually set the SLI rendering mode to AFR1 (Alternate Frame Rendering 1) in NVCPL (Manage 3D Settings entry on the left): In that case try the following tricks:Ģ.3.1 – The correct way: enabling SLI in NVCPL is not enough. Just start your application in fullscreen, that’s all.Ģ.3 – The application does not have a SLI profile like FurMark. Just select Maximize 3D performance in NVIDIA control panel (or NVCPL):Ģ.2 – The application has a SLI profile provided by NVIDIA (like popular OpenGL video games: Quake Wars, Wolfeinsten, etc.): you have nothing to do. There are several ways to enable SLI with an OpenGL application like FurMark:Ģ.1 – first thing, be sure that SLI is enabled. Thanks to SLI you can use several GeForce graphics cards at the same time to speed up the 3D rendering. I recently discoverd that you can do multi-GPU in a windowed application with CrossFire PRO (FirePro graphics cards). Currently there’s no way to get SLI / CF system running in windowed mode… with gaming hardware (GeForce or Radeon based cards). Both SLI and CrossFire only work in fullscreen. To take advantage of SLI or CrossFire, you have to run the OpenGL application in FULLSCREEN. Here are some tricks you can apply to take advantage of the multi-GPU support in FurMark or in any other OpenGL application. Unless the OpenGL application is a commercial video game, you have to tweak a bit to make it CrossFire or SLI compliant. FurMark, FluidMark, TessMark and ShaderToyMark are all OpenGL applications.
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